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XMM-Newton Science Analysis System


eimagecombine (eimagecombine-0.9) [xmmsas_20211130_0941-20.0.0]

More sophisticated

              
eimagecombine prefix='M31_' \
              maskindividual=1 \
              epn_weight='1.0 1.0 1.0 1.0 1.0' \
              em1_weight='1.0 1.0 1.0 1.0 1.0' \       
              em2_weight='1.0 1.0 1.0 1.0 1.0' \                  
              templatebands='0 2 3' \        
              exposureband='2' \
              ecut=2000. \
              keepinterstage=0 \
              smoothstyle='adaptive' \
              minwidth=2.0 \
              maxwidth=50.0 \
              desiredsnr=6.0 \
              nconvolvers=50

Here, only the final images are kept and have the prefix “M31_”. EPIC-pn and MOS exposures are not weighted. The images are smoothed adaptively, using one smoothing template for all energy bands. The template is calculated to have a desired signal to noise ratio of 6.0 for the combination of the energy bands 0, 2, and 3. The images are masked to ensure a total (pn + MOS1 + MOS2) exposure above 2000 sec.



XMM-Newton SOC -- 2021-11-30